not able to store value in text file using fstream - c++

Question

i am new to c++ programming i am not able to store in a text file.It is a very simple program. i was storing the values using the same method earlier i was getting results.
#include<iostream>
#include<fstream>
using namespace std;
int main() {
ofstream fout("one.txt",ios::in);
int val1, rel1;
char val2[20], rel2[20];
cout<<" \n enter the integer value";
cin>>val1;
cout<<" \n enter the string value ";
cin>>val2;
fout.close();
ifstream fin("one.txt");
fin>>rel1;
fin>>rel2;
cout<<"the integer value .\n"<<rel1;
cout<<"the string value .\n"<<rel2;
fin.close();
if (fout==NULL) {
cout<<"the file is empty";
}
return 0;
}
input
100
name
Absurd output is
the integer value is 32760
the string value is 00Dv0

Answer 1

There's a number of assumptions here that seem to need clarification.
If you want to write to the file you need to use fout << rel1;
You (usually) can't compare an object against NULL like you do in if(fout == NULL). This works in C# and Java because in those languages all objects are actually references, in C++ you specify when you want an object and when you want a reference.
You specify that you want to use fout to read from the file and not write to it, "ios::in".
I was a bit bored waiting for some tests to finish so I wrote how I would've written that program:
#include<iostream>
#include <string>
#include<fstream>
int main() {
std::ofstream fout("one.txt",std::ios::out);
int val1, rel1;
std::string val2, rel2;
std::cout <<"enter the integer value: ";
std::cin >>val1;
std::cout <<"enter the string value: ";
std::cin >>val2;
fout <<val1 <<" " <<val2;
fout.close();
std::ifstream fin("one.txt", std::ios::in);
if(!fin.good()) {
std::cout <<"Failed to open file\n";
return 1;
}
fin >>rel1;
fin >>rel2;
std::cout <<"the integer value: " <<rel1 <<"\n";
std::cout <<"the string value: " <<rel2 <<"\n";
fin.close();
return 0;
}